Hi I'm new to this and not sure if posting in the right place i hope someone can help and give me the best ideas to help my baby also it is quite a long message just so u have the full information. Ok so my guinea pig is about 1 1/2 years old so not old at all called rocky he has always been on the small side anyway as he was the runt i think. About a month ago i noticed his fur was green and wet under his chin and i was watching him eat and he didnt look right eating and slowly eating less also his poo became squishy, so i took him to the vets they trimmed his front teeth and said it could be his back teeth causing problems see how he gets on if no better. I left it a few days to see and he was getting worse and making clicking sounds when trying to eat he would only eat his hard treats really, i took him back 2 days later to have his back teeth sorted. They told me there wasn't really any problems with his teeth no mouth sores, ulcers or abcess but his mouth really smelt so they gave me antibiotics and pain relief. He came home that night and had a nugget and a hard treat but was still struggling so i put it down to his teeth just being done. I took him back 2 days later an told them he was only eating his hard treats now nothing eles no grass no nuggets no peppers which he use to love and his poo is still no better so they gave him a gut relaxant and more pain relief as it had only been 2 days. So now its 3 days after his last visit and he has gone really down hill not eating anything at all now wont evwn have his treat i keep trying to force feed his meds and critical care he is not having none of it keeps putting his paw up, he is really lethargic and just sits in the corner hunched up yesterday he just sat in my arms for an hour with no movement his poo was runny yesterday only once though and no poo since. Help what can be wrong with him if its no his teeth he is having water still of a saucer and still making clicking sounds. Thank you inadvance